Specially marked packages will contain codes you can use to unlock double XP time in Modern Warfare 3's multiplayer, when it comes out. For example, a 20 ounce Mountain Dew bottle will give you 15 minutes of time, while a family size 17 ounce Doritos bag will give you 90 minutes of bonus XP time.

Entering both a Mountain Dew and Doritos code together will earn an additional "Power Bonus," or 15 minutes of extra XP time. Here's a sample listing of the products you can get, and the time you'll receive:

The promo will let you accumulate up to 24 hours of double XP time, which will give you a valuable leg up on your journey towards Prestige ranking. In addition, every time you enter a code, you'll receive a "Combat Card," which features additional special content, such as new weapons, characters, maps, perks, and strike packages.

Sure, you'll risk diabetes and obesity if you manage to max out on double XP time. But, isn't that what compels us to answer the call of duty?